I have an AR with strange issue

[Fallbackpuppet]

I will update after I get a chance to test it this weekend.

 

[Fallbackpuppet]

Ok replacing the buffer spring didn't fix it. I put a drop in trigger in and it works fine I changed it back out for a regular trigger group (brand new Centurion Arms AST) and it went right back to what it was doing. I checked the springs and they were all correct but just for grins I flipped the trigger spring, and it was a bigger mess with the trigger not returning correctly. So I just put the RISE ARMAMENT RAVE 140 back in and it ran 150 rounds without issue. I have no idea what was actually wrong but it is working now....

 

[dlbleak]

That is strange.

 

[PBramble]

Problem fit between the disconnector and the hook when the BCG is returning is my guess. Probably causing the BCG to drag across the assembly. Might be as simple as the disconnector spring.

 

[Bocephus123]

How many people are going to respond to this thread without reading the GD things posted by the OP?

Ei Ei Ei O

 

[Two Gun Warrior]

Ok replacing the buffer spring didn't fix it. I put a drop in trigger in and it works fine I changed it back out for a regular trigger group (brand new Centurion Arms AST) and it went right back to what it was doing. I checked the springs and they were all correct but just for grins I flipped the trigger spring, and it was a bigger mess with the trigger not returning correctly. So I just put the RISE ARMAMENT RAVE 140 back in and it ran 150 rounds without issue. I have no idea what was actually wrong but it is working now....

Did you clean the buffer tube good and inspect it for rough places that might slow the buffer. Might oil with a dry lube.

 

[JR777]

Did you do a function check on the trigger with the upper removed?

 

[Camo]

Well it sounds like you got it figured out

 

[Fallbackpuppet]

Did you do a function check on the trigger with the upper removed?

Yes I did

 

[Fallbackpuppet]

Did you clean the buffer tube good and inspect it for rough places that might slow the buffer. Might oil with a dry lube.

No I didn't but probably should have and might anyway. However the drop in trigger seems to have resolved it.